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 Tue Jul 22 03:03:22 2008, John, Rob, Update, PSL, FSS open loop transfer function
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 Tue Jul 22 13:16:09 2008, John, Rob, Update, PSL, FSS open loop transfer function
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Message ID: 715
Entry time: Tue Jul 22 13:16:09 2008
In reply to: 711
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| Author: |
John, Rob |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
FSS open loop transfer function |
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| Quote: | With the common gain slider maxed out the unity gain frequency is 58kHz.
The reference cavity refl diode appears to be okay. RF OUT/ TEST IN transfer function was normal.
There is a ~220mV offset in the RF out. We removed this using a coupler - no change. We also checked the
diode->FSS cable.
Tomorrow I'll take a closer look at the board. |
Should note that the UGF of 58kHz was measured with the test cable (from RFPD to board), so the demod phase was presumably sub-optimal. |